cleaning contaminated site Articles

After years of operation serving the auto parts industry, this zinc and chrome plating plant in Bardstown, Kentucky closed several years ago. It was comprised of three three main plating lines, and it was a mess. Extensive contamination, particularly chrome and acid residue, was present in the plant. In some places sludge on the floor was several inches thick. One of the major challenges ...

Activities on rehabilitation of eleven temporary radwaste repositories are currently underway at the RRC 'Kurchatov Institute'. Technologies used for exploratory drilling of repositories, their radiation survey, cleaning fill-up soil from the repository ceilings and opening the ceilings, RW extraction, sorting and packing in containers are presented. The radiation situation at the repository site ...

The implementation of efficient and cost-effective remedial solutions in the clean-up of impacted properties is paramount in returning brownfields and other impacted properties to viable use in the face of the recent real estate market declines. Historical site use of the Cleveland Flats project area included: a manufactured gas plant (circa. 1850), trucking terminal, & plating operations. As ...

Soil contaminant concentration limits for the protection of terrestrial plants and soil invertebrates are commonly based on thresholds derived using data from laboratory ecotoxicity tests. A comprehensive assessment has been made for the derivation of Ecological Soil Screening Levels (Eco‐SSL) in the United States of America (USA); however, these limits are conservative because of their focus ...

Earlier this year, Ivey International Inc. secured its first remediation project in Alberta using its Ivey-sol Selective Phase Transfer Technology (SPTT). This patented technology is being used to treat extensive soil and groundwater contamination at an active service station in Red Deer, Alberta. With a residential area nearby, the environmental sensitivity is relatively high. Unfortunately, ...

Site Summary: Historical dry cleaning solvent spills from an active dry cleaners contaminated soil and ground water under a shopping center. The migration of contaminants in shallow ground water spread contamination from under the building into a residential subdivision. The resulting plume of contaminated ground water was more than 1,000 feet long. Geology and ...

Site Overview Active gas station in Sebring, FL FDEP Site Number: 8629375 Contamination Gasoline contaminants in ground water Two site features that have long been a detriment to chemical oxidant treatments at sites have recently been overcome by EN Rx. These are free product treatment ...

Priority pollutant behaviour in on-site treatment systems for industrial wastewaters The majority of wastewaters deriving from the chemical industry consist of aqueous discharges produced during the physico-chemical processing of synthetic mixtures involving operations such as filtration, centrifugation, extraction and/or distillation. The wastewater streams, referred to as ...

Geotube units offer an effective solution for contaminated sites to manage the recovery and containment of PCBs, heavy metals, BTEX, PAHs, PACs, and other hazardous materials. Contaminated sediments are a common problem for communities and industries around the world. Past spills, leaks, discharges, and improper disposal or management of hazardous materials and wastes often result in ...

Seventeen families in a Coventry street faced an uncertain future and major disruption to their lives following the discovery of the highly toxic chemical that had polluted the land on which they lived. The one-acre site was previously owned by the Courtaulds chemicals and textiles group, which used it to store carbon disulphide (CS2) – a raw material in the manufacture of viscose rayon at a ...

Covering the day’s trash at the landfill Today’s municipal solid waste (MSW) landfills are much more than places to dump household trash. They’re engineered facilities that are designed to hold and isolate the trash from the environment and are governed by both federal and state regulations. Landfill designers and operators face two main challenges ...

Dry cleaning solvents were found in the ground water adjacent to a dry cleaning facility located in a commercial shopping center. Most of the mass of ground water contamination had migrated under adjacent businesses, which restricted access for remediation. CL-Out® bioremediation was implemented to reduce the volume of contamination in the source area and indirectly down gradient. CL-Out® is a ...

Whether it is an old industrial site in the center of a city, the corner gas station, or a former agricultural site that used pesticides for decades, contaminated property can be found anywhere. These sites can be considered CERCLA, RCRA, state regulated, Brownfield or any other designation. Helping to clean up properties like these, is a win win situation for ...

Although it is widely recognized that microorganisms are essential for sustaining soil fertility, structure, nutrient cycling, groundwater purification and other soil functions, soil microbial toxicity data were excluded from the derivation of Ecological Soil Screening Levels (Eco‐SSL) in the United States. Among the reasons for such exclusion were claims that microbial toxicity tests were too ...

Introduction: Contaminated material is removed and transported to permitted off-site treatment and/or disposal facilities. Some pretreatment of the contaminated media usually is required in order to meet land disposal restrictions. Confined disposal facilities (CDFs) are engineered structure enclosed by dikes and designed to retain dredged materials. A CDF may have a large cell for ...

As natural resources become increasingly limited, the value of restoring contaminated sites, both terrestrial and aquatic, becomes increasingly apparent. Traditionally, goals for remediation have been set prior to any consideration of goals for ecological restoration. The goals for remediation have focused on removing or limiting contamination while restoration goals have targeted the ultimate ...

A Gulf Coast refinery’s amine system was contaminated with up to 3% hydrocarbon. The contamination consisted of hydrocarbon from upstream process units and particulate. The hydrocarbon consisted of LCO and heavy diesel. The current system consisted of an undersized flash tank and a 20% slipstream filtration. The current system could not remove the contaminants so the refinery had to ...

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